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Commit f4ae7543 authored by Maciej Lipinski's avatar Maciej Lipinski
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[WIP] Included feedback from rehearsal, almost final

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figures/misc/WR-zoo.jpg
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figures/misc/WR-zoo.jpg
figures/misc/WR-zoo.jpg
figures/misc/WR-zoo.jpg
figures/misc/WR-zoo.jpg
  • 2-up
  • Swipe
  • Onion skin
presentations/WR_Maciej_EFTS_2019/wr_efts_2019.tex
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...@@ -109,14 +109,14 @@ ...@@ -109,14 +109,14 @@
\item<1-> Initiated to renovate accelerator's ctrl \& timing \item<1-> Initiated to renovate accelerator's ctrl \& timing
\item<2-> Based on well-established standards \item<2-> Based on well-established standards
\begin{itemize}\footnotesize \begin{itemize}\footnotesize
\item <3->Bridged Local Area Network \textcolor{gray}{(IEEE 802.1Q)}
\item <3->Ethernet \textcolor{gray}{(IEEE 802.3)} \item <3->Ethernet \textcolor{gray}{(IEEE 802.3)}
\item <3->Bridged Local Area Network \textcolor{gray}{(IEEE 802.1Q)}
\item <4->Precision Time Protocol \textcolor{gray}{(IEEE 1588)} \item <4->Precision Time Protocol \textcolor{gray}{(IEEE 1588)}
\end{itemize} \end{itemize}
\item<6->Extends standards to meet CERN requirements and provides \item<6->Extends standards to meet CERN requirements and provides
\begin{enumerate} \begin{enumerate}
\item \color{blue!90}{\textbf{Sub-ns synchronization}} \item \color{blue!90}{\textbf{Sub-ns synchronization}}
\item \color{red}{{\textbf{Deterministic data transfer}}} \item \color{red}{{\textbf{Deterministic data transfer}} [2]}
\end{enumerate} \end{enumerate}
\item<7-> Initial specs: links up to 10km, $\approx$2000 nodes \item<7-> Initial specs: links up to 10km, $\approx$2000 nodes
\item<8-> Open Source with commercial support \item<8-> Open Source with commercial support
...@@ -144,7 +144,7 @@ ...@@ -144,7 +144,7 @@
\includegraphics[width=1.0\textwidth]{misc/WR-zoo.jpg}\vspace{-1cm} \includegraphics[width=1.0\textwidth]{misc/WR-zoo.jpg}\vspace{-1cm}
\begin{center} \begin{center}
\small \small
\textbf{Companies selling White Rabbit [2]:} \url{www.ohwr.org/projects/white-rabbit/wiki/wrcompanies} \textbf{Companies selling White Rabbit [3]:} \url{www.ohwr.org/projects/white-rabbit/wiki/wrcompanies}
\end{center} \end{center}
\end{frame} \end{frame}
...@@ -198,8 +198,8 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -198,8 +198,8 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\end{columns} \end{columns}
\pause\pause\pause\pause\pause \pause\pause\pause\pause\pause
{\scriptsize See user page [3]: \url{http://www.ohwr.org/projects/white-rabbit/wiki/WRUsers}} {\scriptsize See user page [4]: \url{http://www.ohwr.org/projects/white-rabbit/wiki/WRUsers}}
{\scriptsize See also article [4] and newsletter [5]} {\scriptsize See also article [5] and newsletter [6]}
\end{frame} \end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
...@@ -301,15 +301,15 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -301,15 +301,15 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{itemize} \begin{itemize}
\item <1->Previous tricks allow high precision of round trip (RTT) measurement \item <1->Previous tricks allow high precision of round trip (RTT) measurement
\item <2->Accuracy requires mitigation of asymmetries \item <2->Accuracy requires mitigation of asymmetries
\item <3->Asymmetry sources: FPGA, PCB, SFP electrics/optics, chromatic dispersion [6,7] \item <3->Asymmetry sources: FPGA, PCB, SFP electrics/optics, chromatic dispersion [7,8]
\item <4->Link delay model: \item <4->Link delay model:
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item \textbf{Fixed delays:} assumed constant, calibrated/measured \item \textbf{Fixed delays:} assumed constant, calibrated/measured
\item \textbf{Variable delays:} online evaluation with fiber asymmetry coefficient: $\alpha = \frac{\nu_g(\lambda_S)}{\nu_g(\lambda_M)} -1 = \frac{\delta_{MS} - \delta_{SM}}{\delta_{SM}}$ \item \textbf{Variable delays:} online evaluation with fiber asymmetry coefficient:\vspace{0.1cm} $\alpha = \frac{\nu_g(\lambda_S)}{\nu_g(\lambda_M)} -1 = \frac{\delta_{MS} - \delta_{SM}}{\delta_{SM}}$
\end{itemize} \end{itemize}
\item <5-> Accurate offset from master (OFM):\scriptsize \\ \item <5-> Accurate offset from master (OFM):\scriptsize \\\vspace{0.2cm}
% $RTT=(t_{4}-t_{1}) - (t_{3}-t_{2})$\\ % $RTT=(t_{4}-t_{1}) - (t_{3}-t_{2})$\\
$\delta_{ms}~ = \frac{1 + \alpha}{2 + \alpha} \, (RTT - \Delta - \epsilon)$ $\delta_{ms}~ = \frac{1 + \alpha}{2 + \alpha} \, (RTT - \sum \Delta - \sum \epsilon)$\vspace{0.2cm}
$OFM = t_{2} - (t_{1} + \delta_{ms} + \Delta_{txm} + \Delta_{rxs} + \epsilon_S)$ $OFM = t_{2} - (t_{1} + \delta_{ms} + \Delta_{txm} + \Delta_{rxs} + \epsilon_S)$
\end{itemize} \end{itemize}
\column{.5\textwidth} \column{.5\textwidth}
...@@ -317,7 +317,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -317,7 +317,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\includegraphics<1-2>[width=1.0\textwidth]{protocol/link-delay-model-detailed-1.jpg} \includegraphics<1-2>[width=1.0\textwidth]{protocol/link-delay-model-detailed-1.jpg}
\includegraphics<3>[width=1.0\textwidth]{protocol/link-delay-model-detailed-2.jpg} \includegraphics<3>[width=1.0\textwidth]{protocol/link-delay-model-detailed-2.jpg}
\includegraphics<4->[width=1.0\textwidth]{protocol/link-delay-model-detailed-3.jpg}\\ \includegraphics<4->[width=1.0\textwidth]{protocol/link-delay-model-detailed-3.jpg}\\
\tiny See: \textit{WR Calibration} [8] \tiny See: \textit{WR Calibration} [9]
\end{center} \end{center}
\end{columns} \end{columns}
% \pause\pause\pause\pause % \pause\pause\pause\pause
...@@ -330,11 +330,11 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -330,11 +330,11 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{frame}{Typical WR network} \begin{frame}{Typical WR network}
\begin{center} \begin{center}
\includegraphics[width=.45\textwidth]{network/wr_network-enhanced_pro.pdf} \includegraphics[width=.5\textwidth]{network/wr_network-enhanced_pro.pdf}
\end{center} \end{center}
\end{frame} \end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}[t,fragile]{White Rabbit Switch [9]} \begin{frame}[t,fragile]{White Rabbit Switch [10]}
\begin{center} \begin{center}
\includegraphics[width=\textwidth]{switch/wrSwitch_v3_3.jpg} \includegraphics[width=\textwidth]{switch/wrSwitch_v3_3.jpg}
\begin{itemize}\small \begin{itemize}\small
...@@ -350,16 +350,21 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -350,16 +350,21 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\end{center} \end{center}
\end{frame} \end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}{Simplified block diagram of the hardware} \begin{frame}{Simplified block diagram of the hardware}
\vspace{-0.3cm} \vspace{-0.3cm}
\begin{center} \begin{center}
\includegraphics[width=.85\textwidth]{switch/switch3_4_simple_diagram_h.pdf} \includegraphics[width=.85\textwidth]{switch/switch3_4_simple_diagram_h.pdf}
\end{center} \end{center}
\end{frame} \end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}{Open \textbf{and} commercially available off-the-shelf}
\includegraphics[width=\textwidth]{misc/WR-zoo.jpg}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}{WR Node [10]: carrier board + FMC} \begin{frame}{WR Node [11, 12]: carrier board + FMC}
\vspace{-0.5cm} \vspace{-0.5cm}
\begin{center} \begin{center}
\includegraphics[width=10cm]{node/shw_kit2.png} \includegraphics[width=10cm]{node/shw_kit2.png}
...@@ -402,7 +407,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -402,7 +407,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{center} \begin{center}
\includegraphics[height=6.0cm]{measurements/meas_results2.pdf}\\ \includegraphics[height=6.0cm]{measurements/meas_results2.pdf}\\
Reported in 2011 in [4] Reported in 2011 in [13]
\end{center} \end{center}
\end{frame} \end{frame}
...@@ -428,14 +433,14 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -428,14 +433,14 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item<1-> \textbf{PCB, FPGA, SFP} -- hardware delay uncertainty \item<1-> \textbf{PCB, FPGA, SFP} -- hardware delay uncertainty
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item Calibration uncertainty: sdev of 2ps [7] \item Calibration uncertainty: sdev of 2ps [8]
\item Linear dependency on temperature\\ (700ps over $-10..55^oC$ [6]): \item Linear dependency on temperature\\ (700ps over $-10..55^oC$ [7]):
\begin{itemize}\tiny \begin{itemize}\tiny
\item CuteWR: tx $-8.4ps/K$, rx $13.3ps/K$ [6] \item CuteWR: tx $-8.4ps/K$, rx $13.3ps/K$ [7]
\item Switch: 8ps/K [7] \item Switch: 8ps/K [8]
\item WR-Zen: 4ps/K [7] \item WR-Zen: 4ps/K [8]
\end{itemize} \end{itemize}
\item Remedy: active compensation \\(for LHASSO, 50ps over $-10..55^oC$ [6]) \item Remedy: active compensation \\(for LHASSO, 50ps over $-10..55^oC$ [7])
% \item SFP delay dependency on input power, error up to 30ps [2] % \item SFP delay dependency on input power, error up to 30ps [2]
\end{itemize} \end{itemize}
\item<2-> \textbf{Bitslide} -- measurement uncertainty \item<2-> \textbf{Bitslide} -- measurement uncertainty
...@@ -452,7 +457,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -452,7 +457,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\includegraphics<2>[width=\textwidth]{protocol/bitslide.jpg} \includegraphics<2>[width=\textwidth]{protocol/bitslide.jpg}
\includegraphics<1>[width=\textwidth]{measurements/fixed-delays-temp-dependency.jpg}\\ \includegraphics<1>[width=\textwidth]{measurements/fixed-delays-temp-dependency.jpg}\\
\tiny \tiny
\textcolor<2>{white}{Figure source: [6]} \textcolor<2>{white}{Figure source: [7]}
\end{center} \end{center}
\end{columns} \end{columns}
...@@ -463,7 +468,11 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -463,7 +468,11 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{center} \begin{center}
\includegraphics[width=\textwidth]{misc/inaccuracy-sources-variable-delays.jpg} \includegraphics[width=\textwidth]{misc/inaccuracy-sources-variable-delays.jpg}
\end{center} \end{center}
\begin{center}
\pause
$\alpha = \frac{\nu_g(\lambda_S)}{\nu_g(\lambda_M)} -1 = \frac{\delta_{MS} - \delta_{SM}}{\delta_{SM}}$\\\vspace{0.2cm}
$\delta_{ms}~ = \frac{1 + \alpha}{2 + \alpha} \, (RTT - \sum \Delta - \sum \epsilon)$
\end{center}
\end{frame} \end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}{Medium asymmetry compensation} \begin{frame}{Medium asymmetry compensation}
...@@ -471,39 +480,57 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -471,39 +480,57 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
% \includegraphics[height=2.3cm]{misc/inaccuracy-sources-variable-delays.jpg} % \includegraphics[height=2.3cm]{misc/inaccuracy-sources-variable-delays.jpg}
% \end{center} % \end{center}
\begin{columns}[c] \begin{columns}[c]
\column{0.7\textwidth}\vspace{-0.5cm} \column{0.71\textwidth}\vspace{-0.5cm}
\textcolor{white}{dddd\\dddd}
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item<1-> \textbf{SFP} -- tx wavelength uncertainty \item<1-> \textbf{SFP} -- tx wavelength uncertainty
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item<2-> IEEE802.3ah allows nominal value departures\\(10nm at 1490nm, 50nm at 1310nm) \item<2-> IEEE802.3ah allows nominal value departures\\(10nm at 1490nm, 50nm at 1310nm)
\item<3-> Linear dependency on SFP temp: \item<3-> Linear dependency on SFP temp:
\begin{itemize}\tiny \begin{itemize}\tiny
\item SFP@1310nm: $0.11 ps/(K \cdot km)$ [6] \item 1310nm: $0.4~~\sim0.5~~nm/K$ $\Rightarrow$ $~~~0.11 ps/(K \cdot km)$ [7]
\item SFP@1490nm: $-0.51 ps/(K \cdot km)$ [6] \item 1490nm: $0.09\sim0.12 nm/K$ $\Rightarrow$ $-0.51 ps/(K \cdot km)$ [7]
\item SFP@1550nm: $1.7ps/(K \cdot km)$ [7] \item 1550nm: ~~~~~~~~~$\approx0.1~~nm/K$ $\Rightarrow$ $~~~1.7~~ps/(K \cdot km)$ [8]
\end{itemize} \end{itemize}
% \begin{itemize}\tiny
% \item 1310nm: $0.4\sim0.5 nm/K$ (AXGE-1254 SFP) [6]
% \item 1490nm: $0.09\sim0.12 nm/K$ (AXGE-3454 SFP) [6]
% \item 1550nm: $\approx0.1 nm/K$ [7]
% \end{itemize}
% \begin{itemize}\tiny
% \item 1310nm: $0.4\sim0.5 nm/K$, for G.652.D fiber: $0.11 ps/(K \cdot km)$ [6]
% \item 1490nm: $0.09\sim0.12 nm/K$, for G.652.D fiber: $-0.51 ps/(K \cdot km)$ [6]
% \item 1550nm: $0.1 nm/K$, for G.652.D fiber:$1.7ps/(K \cdot km)$ [7]
% \end{itemize}
% \item<4-> SFP temp-dependency for G652.D fiber:
% \begin{itemize}\tiny
% \item 1310nm: $0.11 ps/(K \cdot km)$ [6]
% \item 1490nm: $-0.51 ps/(K \cdot km)$ [6]
% \item 1550nm: $1.7ps/(K \cdot km)$ [7]
% \end{itemize}
\end{itemize} \end{itemize}
\item<4-> \textbf{Fiber} -- chromatic dispersion variation \item<5-> \textbf{Fiber} -- chromatic dispersion variation
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item Linear dependency on fiber temp: \item Linear dependency on fiber temp:
\begin{itemize}\tiny \begin{itemize}\tiny
\item G652.D at 1310/1490: $-0.2 ps/(K\cdot km)$ [6] \item G.652.D at 1310/1490: $-0.2 ~~ps/(K\cdot km)$ [7]
\item G652.D at 1310/1490: $-0.12 ps/(K\cdot km)$ [7] \item G.652.D at 1310/1490: $-0.12 ps/(K\cdot km)$ [7]
\item G652.D at 1490/1550: $-0.05 ps/(K\cdot km)$ [7] \item G.652.D at 1490/1550: $-0.05 ps/(K\cdot km)$ [8]
\end{itemize} \end{itemize}
\end{itemize} \end{itemize}
\item<5-> Significant for links $>10km$ [7] \item<6-> Significant for links $>10km$
\item<6-> Remedy: temp-stabilized SFP, closer wavelength \\(C21\& C23 @ 1560.61 \& 1558.98 in SKA [7]) \item<7-> Remedy: temp-stabilized SFP, closer wavelength \\(C21\& C23 @ 1560.61 \& 1558.98 in SKA [8])
\end{itemize} \end{itemize}
\textcolor{white}{dddd\\dddd\\dddd\\dddd}
\column{0.45\textwidth} \column{0.45\textwidth}
\begin{center}\vspace{-0.5cm} \begin{center}\vspace{-0.5cm}
\includegraphics<3>[width=0.6\textwidth]{measurements/sfp-temp-dependence.jpg} \includegraphics<4>[width=0.8\textwidth]{measurements/sfp-temp-dependence.jpg}
\includegraphics<4>[width=\textwidth]{measurements/fiber-temp-dependency.jpg} \includegraphics<5>[width=\textwidth]{measurements/fiber-temp-dependency.jpg}
% \includegraphics<5->[width=\textwidth]{applications/SKA-DWDM.jpg} % \includegraphics<5->[width=\textwidth]{applications/SKA-DWDM.jpg}
\includegraphics<5->[width=\textwidth]{measurements/PBowen-link-errors.jpg}\textcolor{white}{d}\\ \includegraphics<6->[width=\textwidth]{measurements/PBowen-link-errors.jpg}\textcolor{white}{d}\\
\textcolor<1-2,4->{white}{\tiny Figure source: [6]}\\ \textcolor<1-3,5->{white}{\tiny Figure source: [7]}\\
\textcolor<1-3>{white}{\tiny Figure source: [7]} \textcolor<1-4>{white}{\tiny Figure source: [8]}
% \tiny\pause\pause\pause % \tiny\pause\pause\pause
% Figure source: [1] % Figure source: [1]
\end{center} \end{center}
...@@ -544,7 +571,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -544,7 +571,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\end{itemize} \end{itemize}
\item<3-> \textbf{GTX} \item<3-> \textbf{GTX}
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item Flicker PM noise: -97 dBc at 1 Hz \item Flicker PM noise: -100 dBc at 1 Hz
\item White PM noise: -106 dBc\\ MDEV at $\tau=1s$ to 4E-13 \item White PM noise: -106 dBc\\ MDEV at $\tau=1s$ to 4E-13
\end{itemize} \end{itemize}
\item<4-> Remedy: none, inherent to technology \item<4-> Remedy: none, inherent to technology
...@@ -557,7 +584,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -557,7 +584,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\end{columns}\vspace{0.1cm} \end{columns}\vspace{0.1cm}
\begin{center} \begin{center}
\tiny NOTE: Carrier is 10MHz\\ \tiny NOTE: Carrier is 10MHz\\
\tiny All above data is based on [13] \tiny All above data is based on [14]
\end{center} \end{center}
\end{frame} \end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
...@@ -574,17 +601,18 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -574,17 +601,18 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item Phase noise leaking from the local oscillator \item Phase noise leaking from the local oscillator
\item Instabilities induced by cooling airflow \item Instabilities induced by cooling airflow
\item Remedy: increase bandwidth (see [14]) or better oscillator (see daughterboard [15]) \item Remedy: increase bandwidth (see [15]) or better oscillator (see daughterboard [16])
\end{itemize} \end{itemize}
\item<3->\textbf{External reference input} - Grandmaster only \item<3->\textbf{External reference input} - Grandmaster only
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item Noisy internal MMCM PLL \item Noisy internal Virtex-6 MMCM PLL
\item Large phase noise power at 10kHz to 2MHz \item Large phase noise power at 10kHz to 2MHz
\item Remedy: external PLL to synthesize 62.5MHz from 10MHz (see daughterboard [15]) \item Phase noise above DDMTD Nyquist (1.9kHz) bandwidth folds back to baseband
\item Remedy: external PLL to synthesize 62.5MHz from 10MHz (see daughterboard [16])
\end{itemize} \end{itemize}
\end{itemize} \end{itemize}%\vspace{-0.2cm}
\begin{table}[ht] \begin{table}[ht]
\centering \centering
\tiny \tiny
...@@ -602,8 +630,9 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -602,8 +630,9 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\column{0.5\textwidth} \column{0.5\textwidth}
\begin{center}\vspace{-0.5cm}\vspace{0.5cm} \begin{center}\vspace{-0.5cm}\vspace{0.5cm}
\includegraphics<1-2>[width=.99\textwidth]{measurements/phase_noise_v3_4.pdf} \includegraphics<1-2>[width=.99\textwidth]{measurements/phase_noise_v3_4.pdf}
\includegraphics<3>[width=1.08\textwidth]{switch/mmcm_noise.png} \includegraphics<3>[width=0.98\textwidth]{switch/mmcm_noise2.jpg}
\includegraphics<4>[width=.45\textheight, angle=90]{measurements/WRSlowJitter/rsz_3d_image__1_.jpg} \includegraphics<4>[width=.99\textwidth]{measurements/phase_noise_v3_4.pdf}
\includegraphics<5>[width=.45\textheight, angle=90]{measurements/WRSlowJitter/rsz_3d_image__1_.jpg}
\tiny \tiny
\begin{table}[!ht] \begin{table}[!ht]
\centering \centering
...@@ -620,9 +649,9 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -620,9 +649,9 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\end{table}%\vspace{-0.3cm} \end{table}%\vspace{-0.3cm}
\end{center} \end{center}
\end{columns} \end{columns}\vspace{-0.5cm}
\begin{center} \begin{center}
\tiny Data from [14] \tiny Data from [15]
\end{center} \end{center}
\end{frame} \end{frame}
...@@ -632,7 +661,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -632,7 +661,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{frame}{Test setup for switch with Low Jitter Daughterboard} \begin{frame}{Test setup for switch with Low Jitter Daughterboard}
\begin{center} \begin{center}
\includegraphics[width=\textwidth]{measurements/WRSlowJitter/rsz_experimental_setup.png}\\ \includegraphics[width=\textwidth]{measurements/WRSlowJitter/rsz_experimental_setup.png}\\
\tiny See more: [15] \tiny See more: [16]
\end{center} \end{center}
\end{frame} \end{frame}
...@@ -656,12 +685,12 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -656,12 +685,12 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\includegraphics[width=.45\textwidth]{measurements/WRSlowJitter/GM+BC_MDEV.jpg} \includegraphics[width=.45\textwidth]{measurements/WRSlowJitter/GM+BC_MDEV.jpg}
\end{center} \end{center}
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item Jitter improvement [13, 15] \item Jitter improvement [14, 16]
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item GM: 9ps to 1ps RMS 1Hz-100kHz \item GM: 9ps to 1ps RMS 1Hz-100kHz
\item BC: 11ps to $<2$ps RMS 1Hz-100kHz \item BC: 11ps to $<2$ps RMS 1Hz-100kHz
\end{itemize} \end{itemize}
\item MDEV improvement [13, 15] \item MDEV improvement [14, 16]
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item GM: 2E-12 to $<$5E-13 $\tau$=1s ENBW 50Hz \item GM: 2E-12 to $<$5E-13 $\tau$=1s ENBW 50Hz
\item BC: 4E-12 to $<$7E-13 $\tau$=1s ENBW 50Hz \item BC: 4E-12 to $<$7E-13 $\tau$=1s ENBW 50Hz
...@@ -676,17 +705,17 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -676,17 +705,17 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{frame}{Current developments} \begin{frame}{Current developments}
\begin{itemize}\small \begin{itemize}\small
\item<1-> Standardization in IEEE 1588: \item<1-> Standardization in IEEE 1588 [17]:
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item High Accuracy sub-committee dedicated to WR \item High Accuracy sub-committee dedicated to WR
\item High Accuracy, a.k.a. WR, to become a third Default PTP Profile \item High Accuracy, a.k.a. WR, to become a third Default PTP Profile
\item Revised standard expected in 2019. \item Revised standard expected in 2019.
\end{itemize} \end{itemize}
\item<2-> Long-haul link \item<2-> Long-haul link [18, 19]:
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item Triggered by National Time Labs and Radio Telescope \item Triggered by National Time Labs and Radio Telescope
\item \textbf{Sub-ns} is achievable on links on \textbf{up to 80km} \item \textbf{Sub-ns on 80km} and \textbf{ns on 137km} links with single bidirectional fiber
\item \textbf{Ns on 137km} bidirectional \& \textbf{$\pm$2.5ns on 950km} unidirectional links \item \textbf{$\pm$2.5ns on 950km} links with two unidirectional fibers
\end{itemize} \end{itemize}
% \item<3-> Absolute Calibration % \item<3-> Absolute Calibration
\item<3-> WR-based applications \item<3-> WR-based applications
...@@ -715,7 +744,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -715,7 +744,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
% \end{block} % \end{block}
% \end{frame} % \end{frame}
% %
\begin{frame}{RF over WR a.k.a. Distributed DDS} \begin{frame}{RF over WR a.k.a. Distributed DDS [20]}
\begin{center} \begin{center}
\includegraphics[width=\columnwidth]{applications/remote_dds.pdf} \includegraphics[width=\columnwidth]{applications/remote_dds.pdf}
\end{center} \end{center}
...@@ -729,7 +758,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -729,7 +758,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\end{block} \end{block}
\end{frame} \end{frame}
\begin{frame}{Distributed oscilloscope} \begin{frame}{Distributed oscilloscope [21]}
\begin{center} \begin{center}
\includegraphics[width=0.9\textwidth]{applications/distr_oscill.pdf} \includegraphics[width=0.9\textwidth]{applications/distr_oscill.pdf}
\end{center} \end{center}
...@@ -781,27 +810,65 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -781,27 +810,65 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\backupbegin \backupbegin
\begin{frame}{References} \begin{frame}{References}
\tiny \tiny
\begin{enumerate} % \begin{enumerate}
\item \textbf{White Rabbit Project:}\url{https://www.ohwr.org/project/white-rabbit/wikis} % \item \textbf{White Rabbit Project:}\url{https://www.ohwr.org/project/white-rabbit/wikis}
\item \textbf{Companies selling WR:}\url{https://www.ohwr.org/project/white-rabbit/wrcompanies} % \item \textbf{Companies selling WR:}\url{https://www.ohwr.org/project/white-rabbit/wrcompanies}
\item \textbf{Users of WR:}\url{https://www.ohwr.org/project/white-rabbit/WRUsers} % \item \textbf{Users of WR:}\url{https://www.ohwr.org/project/white-rabbit/WRUsers}
\item \textbf{White Rabbit Applications and Enhancements}, M.Lipinski et. al, ISPCS2018\\\url{https://www.ohwr.org/project/white-rabbit/uploads/7f9e67258850d5c036629a509bf2e124/ISPCS2018-WRApplicatoinsAndEnhancements.pdf} % \item \textbf{White Rabbit Applications and Enhancements}, M.Lipinski et. al, ISPCS2018\\\url{https://www.ohwr.org/project/white-rabbit/uploads/7f9e67258850d5c036629a509bf2e124/ISPCS2018-WRApplicatoinsAndEnhancements.pdf}
\item \textbf{White Rabbit Newsletter, September 2018} \\\url{https://www.ohwr.org/project/white-rabbit/wikis/newsletter-2018-09} % \item \textbf{White Rabbit Newsletter, September 2018} \\\url{https://www.ohwr.org/project/white-rabbit/wikis/newsletter-2018-09}
\item \textbf{Temperature Effect and Correction Method of White Rabbit Timing Link}; Hongming Li, Guanghua Gong, Weibin Pan, Qiang Du, Jianmin Li % \item \textbf{Temperature Effect and Correction Method of White Rabbit Timing Link}; Hongming Li, Guanghua Gong, Weibin Pan, Qiang Du, Jianmin Li
\item \textbf{DWDM Stabilized Optics for White Rabbit}, Paul Boven % \item \textbf{DWDM Stabilized Optics for White Rabbit}, Paul Boven
\item \textbf{WR Calibration}, version 1.1, G.Daniluk\\ \url{www.cern.ch/white-rabbit/documents/WR_Calibration-v1.1-20151109.pdf} % \item \textbf{WR Calibration}, version 1.1, G.Daniluk\\ \url{www.cern.ch/white-rabbit/documents/WR_Calibration-v1.1-20151109.pdf}
\item \textbf{White Rabbit Switch:} \url{https://www.ohwr.org/project/white-rabbit/wikis/Switch} % \item \textbf{White Rabbit Switch:} \url{https://www.ohwr.org/project/white-rabbit/wikis/Switch}
\item \textbf{White Rabbit Node:} \url{https://www.ohwr.org/project/white-rabbit/wikis/Node} % \item \textbf{White Rabbit Node:} \url{https://www.ohwr.org/project/white-rabbit/wikis/Node}
\item \textbf{White Rabbit PTP Core:} \url{https://www.ohwr.org/project/wr-cores/wikis/Wrpc-core} % \item \textbf{White Rabbit PTP Core:} \url{https://www.ohwr.org/project/wr-cores/wikis/Wrpc-core}
\item \textbf{White Rabbit: a PTP application for robust sub-nanosecond synchronization}, M. Lipiński et el, ISPCS2011\\\url{https://www.ohwr.org/project/white-rabbit/uploads/cfc34350adcbf5156f968fac0b9301b5/ISPCS2011_WR.pdf} % \item \textbf{White Rabbit: a PTP application for robust sub-nanosecond synchronization}, M. Lipiński et el, ISPCS2011\\\url{https://www.ohwr.org/project/white-rabbit/uploads/cfc34350adcbf5156f968fac0b9301b5/ISPCS2011_WR.pdf}
\item \textbf{White Rabbit Clock Synchronization: Ultimate Limits on Close-In Phase Noise and Short-Term Stability Due to FPGA Implementation}, M.Rizzi et el, UFFC-T, 2018\\\url{https://www.ohwr.org/project/white-rabbit/uploads/253cbfc17d2b43cd445b68348aee0374/Submitted_IEEE.pdf} % \item \textbf{White Rabbit Clock Synchronization: Ultimate Limits on Close-In Phase Noise and Short-Term Stability Due to FPGA Implementation}, M.Rizzi et el, UFFC-T, 2018\\\url{https://www.ohwr.org/project/white-rabbit/uploads/253cbfc17d2b43cd445b68348aee0374/Submitted_IEEE.pdf}
\item \textbf{White Rabbit Clock Characteristics}, M. Rizzi et el, ISPCS2016\\\url{https://www.ohwr.org/project/white-rabbit/uploads/2fa1a438446fc6c85b4540faecf1017a/ISPCS2016-WRClockCharacteristics.pdf} % \item \textbf{White Rabbit Clock Characteristics}, M. Rizzi et el, ISPCS2016\\\url{https://www.ohwr.org/project/white-rabbit/uploads/2fa1a438446fc6c85b4540faecf1017a/ISPCS2016-WRClockCharacteristics.pdf}
\item \textbf{WRS Low Jitter Daughterboard:}\url{www.ohwr.org/projects/wrs-low-jitter} % \item \textbf{WRS Low Jitter Daughterboard:}\url{www.ohwr.org/projects/wrs-low-jitter}
\end{enumerate} % \item \textbf{Methods to Increase Reliability and Ensure Determinism in a White Rabbit Network}, M. Lipinski\\\url{http://cds.cern.ch/record/2261452}
% \item \textbf{Trigger and RF Distribution using White Rabbit}, T. Wlostowski et al\\\url{http://accelconf.web.cern.ch/AccelConf/ICALEPCS2015/papers/wec3o01.pdf}
% \item \textbf{White Rabbit Trigger Distribution:}\url{https://www.ohwr.org/project/wrtd/wikis/home}
% % \url{https://indico.cern.ch/event/815290/#1-trigger-distribution-over-wh}
% \end{enumerate}
\begin{columns}[c]
\column{.01\textwidth}
\column{1.15\textwidth}
$[1]$ \textbf{White Rabbit Project:} \url{www.ohwr.org/project/white-rabbit/wikis}\\
$[2]$ \textbf{Methods to Increase Reliability and Ensure Determinism in a WR Network}, M. Lipinski, \url{cds.cern.ch/record/2261452}\\
$[3]$ \textbf{Companies selling WR:} \url{www.ohwr.org/project/white-rabbit/wrcompanies}\\
$[4]$ \textbf{Users of WR:} \url{www.ohwr.org/project/white-rabbit/WRUsers}\\
$[5]$ \textbf{White Rabbit Applications and Enhancements}, M.Lipinski et al., ISPCS2018, \url{www.ohwr.org/project/white-rabbit/uploads/7f9e67258850d5c036629a509bf2e124/ISPCS2018-WRApplicatoinsAndEnhancements.pdf}\\
$[6]$ \textbf{White Rabbit Newsletter, September 2018: } \url{www.ohwr.org/project/white-rabbit/wikis/newsletter-2018-09}\\
$[7]$ \textbf{Temperature Effect and Correction Method of White Rabbit Timing Link}; H. Li et al., \url{arxiv.org/abs/1406.4223}\\
$[8]$ \textbf{DWDM Stabilized Optics for White Rabbit}, P. Boven, \url{ieeexplore.ieee.org/document/8409035}\\
$[9]$ \textbf{WR Calibration}, version 1.1, G.Daniluk, \url{www.cern.ch/white-rabbit/documents/WR_Calibration-v1.1-20151109.pdf}\\
$[10]$ \textbf{White Rabbit Switch:} \url{www.ohwr.org/project/white-rabbit/wikis/Switch}\\
$[11]$ \textbf{White Rabbit Node:} \url{www.ohwr.org/project/white-rabbit/wikis/Node}\\
$[12]$ \textbf{White Rabbit PTP Core:} \url{www.ohwr.org/project/wr-cores/wikis/Wrpc-core}\\
$[13]$ \textbf{White Rabbit: a PTP application for robust sub-nanosecond synchronization}, M. Lipiński et el, ISPCS2011\\
~~~~~~~ \url{www.ohwr.org/project/white-rabbit/uploads/cfc34350adcbf5156f968fac0b9301b5/ISPCS2011_WR.pdf}\\
$[14]$ \textbf{White Rabbit Clock Synchronization: Ultimate Limits on Close-In Phase Noise and Short-Term Stability Due to FPGA Implementation}, M.Rizzi et el, UFFC-T, 2018\\
~~~~~~~ \url{www.ohwr.org/project/white-rabbit/uploads/253cbfc17d2b43cd445b68348aee0374/Submitted_IEEE.pdf}\\
$[15]$ \textbf{White Rabbit Clock Characteristics}, M. Rizzi et el., ISPCS2016, \url{www.ohwr.org/project/white-rabbit/uploads/2fa1a438446fc6c85b4540faecf1017a/ISPCS2016-WRClockCharacteristics.pdf}\\
$[16]$ \textbf{WRS Low Jitter Daughterboard:} \url{www.ohwr.org/projects/wrs-low-jitter}\\
$[17]$ \textbf{White Rabbit standardization:}
\url{www.ohwr.org/projects/wr-std/wiki/} (\url{www.ohwr.org/projects/wr-std/wiki/wrin1588})
$[18]$ \textbf{WR Precision Time Protocol on Long-Distance Fiber Links}, E. F. Dierikx et al., \url{ieeexplore.ieee.org/document/7383303}\\
$[19]$ \textbf{White Rabbit Time Transfer on Medium and Long Fibre Hauls at INRIM}, G. Fantino et al., \\
~~~~~~~ \url{www.ion.org/publications/abstract.cfm?articleID=12598}\\
$[20]$ \textbf{Trigger and RF Distribution using White Rabbit}, T. Wlostowski et al., ICALEPCS2015, \\
~~~~~~~ \url{accelconf.web.cern.ch/AccelConf/ICALEPCS2015/papers/wec3o01.pdf}\\
$[21]$ \textbf{White Rabbit Trigger Distribution: }
\url{www.ohwr.org/project/wrtd/wikis/home}\\
~~~~~~~ \url{indico.cern.ch/event/815290/\#1-trigger-distribution-over-wh}\\
% \column{.01\textwidth}
\end{columns}
\end{frame} \end{frame}
\begin{frame}{References} \begin{frame}{Backup slides}
\begin{center} \begin{center}
Backup slides Backup slides
\end{center} \end{center}
...@@ -821,39 +888,47 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -821,39 +888,47 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\includegraphics[width=.5\textwidth]{measurements/WRSlowJitter/slave_mdev.png} \includegraphics[width=.5\textwidth]{measurements/WRSlowJitter/slave_mdev.png}
\end{center} \end{center}
\end{frame} \end{frame}
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \subsection{Standardization}
% \subsection{} \begin{frame}{WR standardization in IEEE1588}
% \begin{frame}{Performance Enhancements} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \begin{columns}[c]
% \begin{itemize}\footnotesize \column{.8\textwidth}
% \item<1-> Compensation of hardware temperature variation
% \begin{itemize}\scriptsize \begin{itemize}\small
% \item Triggered by cosmic ray detectors \item<1-> IEEE standards are revised periodically
% \item Active correction of hardware temperature variation \item<2-> The IEEE1588 is revised by industry/academia
% \item Pk-pk variation from 700 ps to \textbf{$<$150 ps with sdev $<$50ps (-10 to 50$^o$C)} \item<3-> Revision performed in 5 sub-committees \\\scriptsize(\url{https://ieee-sa.imeetcentral.com/1588public/})
% \end{itemize} \item<4-> High Accuracy sub-committee dedicated to WR
% \item<2-> Link asymmetry correction \begin{itemize}\scriptsize
% \begin{itemize}\scriptsize \item<6-> Generalization of WR methods
% \item Triggered by radio telescope (Square Kilometre Array) \item<6-> Inclusion of the generalizations
% \item At 1310/1490nm, temp variation -0.12 ps/km/K (3ns for 80km over 50$^o$C) \end{itemize}
% \item \textbf{Sub-ns for 80km over 50$^o$C} using DWDM SFP on ITU channels C21/C22 (1560.61/1558.98 nm) \item<7-> Revised IEEE1588 expected in 2019
% \end{itemize} \end{itemize}
% \item<3-> Absolute calibration \column{.4\textwidth}
% \begin{itemize}\scriptsize \begin{center}
% \item Triggered by \includegraphics<1-2>[width=0.8\textwidth]{p1588/p1588-1.jpg}
% \item \includegraphics<3>[width=0.8\textwidth]{p1588/p1588-2.jpg}
% \item \includegraphics<4>[width=0.8\textwidth]{p1588/p1588-3.jpg}
% \end{itemize} \includegraphics<5->[width=0.8\textwidth]{p1588/p1588-4.jpg}
% \item<4-> Long-haul link \end{center}
% \begin{itemize}\scriptsize \end{columns}
% \item Triggered by National Time Labs and Radio Telescope \end{frame}
% \item \textbf{Sub-ns} is achievable on links on \textbf{up to 80km} \begin{frame}{WR standardization in IEEE1588}
% \item \textbf{Ns on 137km} bidirectional \& \textbf{$\pm$2.5ns on 950km} unidirectional links %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \end{itemize} \begin{center}
% \item<5-> Jitter and clock stability (next slide) \includegraphics<1>[width=1.0\textwidth]{p1588/HAin1588-0.jpg}
% \end{itemize} \includegraphics<2>[width=1.0\textwidth]{p1588/HAin1588-1.jpg}
% \includegraphics<3>[width=1.0\textwidth]{p1588/HAin1588-2.jpg}
% \end{frame} \includegraphics<4>[width=1.0\textwidth]{p1588/HAin1588-3.jpg}
\includegraphics<5>[width=1.0\textwidth]{p1588/HAin1588-4.jpg}
\includegraphics<6>[width=1.0\textwidth]{p1588/HAin1588-5.jpg}
\end{center}
\begin{center}
\scriptsize
\textbf{White Rabbit integration into IEEE1588-20XX as High Accuracy [17]:} \url{https://www.ohwr.org/projects/wr-std/wiki/wrin1588}
\end{center}
\end{frame}
% %
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \subsection{} % \subsection{}
...@@ -943,44 +1018,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline ...@@ -943,44 +1018,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
% \end{frame} % \end{frame}
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \subsection{}
% \begin{frame}{Performance Enhancements}
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \begin{itemize}\scriptsize
% \item Triggered by National Laboratories and RF distribution
% \item Allan deviation (ADEV) from 1e-11 to \textbf{1e-12} over 1s
% \item Random jitter from 11 to \textbf{1.1ps RMS} (1 Hz to 100kHz)
% \item Ongong work to achieve jitter of \textbf{sub-100fs RMS} (100Hz to 20MHz)
% \end{itemize}
%
% \end{frame}
%
% \begin{frame}{WR switch clocking scheme}{Thanks to Mattia Rizzi for the work and
% the figures in this section}
% \begin{center}
% \includegraphics[width=.85\textwidth]{switch/wrs_v3_3_clocking.png}
% \end{center}
% \end{frame}
%
% \begin{frame}{MMCM noise}
% \begin{center}
% \includegraphics[height=.7\textheight]{switch/mmcm_noise.png}
% \end{center}
% \end{frame}
%
% \begin{frame}{WR Switch: low jitter daughterboard}
% \begin{columns}
% \column{.35\textwidth}
% \includegraphics[width=.8\textheight, angle=90]{measurements/WRSlowJitter/rsz_3d_image__1_.jpg}
% \column{.65\textwidth}
% \begin{itemize}
% \item Current release of WRS in GM mode has sub-optimal performance on both jitter (9ps RMS 1Hz-100kHz) and ADEV (1.4E-11 $\tau$=1s ENBW 50Hz)
% \item A daughterboard was designed, produced and tested to improve the performance
% \item Modified WRS improves performance on both jitter ($<$2ps RMS 10Hz-100kHz) and ADEV ($<$5E-13 $\tau$=1s ENBW 50Hz) in GM mode
% \end{itemize}
% \end{columns}
% \end{frame}
\backupend \backupend
......
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